Forum members Jhwisner & Silver submitted links to a new article on Ars Technica where the site posted Steam sales estimates for all 2014 PC games.
Here is more information form Jhwisner.
Here is more information form Jhwisner.
More information.Ars Technica used data availible publicaly through steam's API to estimate sales, ownership, and playtime for the 400 most popular games on steam for 2014. They did this for 2013 previously and it was pretty interesting.
Some interesting tidbits (these are games released in 2014, numbers are estimated Steam owners and obviously does not include sales on GoG or other distribution systems)
Divinity: Original Sin ~ 802,315
Dark Souls II ~ 964,266
South Park: The Stick of Truth ~ 929,442
Wasteland 2 ~ 384,760
Banner Saga ~ 343,511
Final Fantasy XIII ~ 327,959
Shadowrun Dragonfall Director's edition ~ 313,082
To put this in some perspective, they also found there to be roughly 3 million new Skyrim owners on Steam since 4/14/2014. The good news there is that if you think Bethesda likes money, then they might not be at all disingenous when they said they were putting an increased focus on the PC going forward..